What will happen if the Air Preheater is placed before the Economiser?

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Question Posted / rana

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What will happen if the Air Preheater is placed before the Economiser?..

Answer / bidyut

coal consumption will be high.

Is This Answer Correct ?

13 Yes

1 No

What will happen if the Air Preheater is placed before the Economiser?..

Answer / anbu

May be coal consumption is high. And the major issue is that the temperature of flue gas may reduced to below the acidic dew point then the tube erosion will occur in economiser coils and ESP also will disturb like lesser efficiency due to low charging performance.

Acidic dew point means that, H2So4 phase change occur from gaseous state to liquid state.

Is This Answer Correct ?

9 Yes

0 No

What will happen if the Air Preheater is placed before the Economiser?..

Answer / selvalagan

Air pre heater air outlet temperature will be high and Economiser outlet water temperature is low.

So boiler efficiency is become low.

Is This Answer Correct ?

9 Yes

0 No

What will happen if the Air Preheater is placed before the Economiser?..

Answer / dk

satuated temperature very low temperature and air heater outlrt air & pa air also hot air above 200c and fuel consumption not high as possible only reason for economiser o/l temperature only decreased

Is This Answer Correct ?

1 Yes

0 No

What will happen if the Air Preheater is placed before the Economiser?..

Answer / syed

Drum itself hammering will happen due to low inlet temperature also desuperheater coil damage due to low water temperature

Is This Answer Correct ?

0 Yes

1 No

What will happen if the Air Preheater is placed before the Economiser?..

Answer / shivaling naik

For water temperature increasing....